[R] library(xlsx) fails with an error: Error: package ‘rJava’ could not be loaded

[Miloš Žarković]

Do you have 64-bit Java installed?

Regards
Miloš


On Saturday, April 18, 2015, John Sorkin <JSorkin at grecc.umaryland.edu>
wrote:

> Windows 7 64-bit
> R 3.1.3
> RStudio 0.98.1103
>
>
> I am having difficulty loading and installing the xlsx package. The
> loading occurred without any problem, however the library command
> library(xlsx) produced an error related to rJava. I tried to install
> rJava seperately, re-loaded the xlsx package, and entered the
> library(xlsx) command but received the same error message about rJave.
> Please see terminal messages below. Any suggestion that would allow me
> to load and run xlsx would be appreciated.
> Thank you,
> John
>
>
> > install.packages("xlsx")
> Installing package into ‘C:/Users/John/Documents/R/win-library/3.1’
> (as ‘lib’ is unspecified)
> trying URL
> 'http://cran.rstudio.com/bin/windows/contrib/3.1/xlsx_0.5.7.zip'
> Content type 'application/zip' length 400944 bytes (391 KB)
> opened URL
> downloaded 391 KB
>
>
> package ‘xlsx’ successfully unpacked and MD5 sums checked
>
>
> The downloaded binary packages are in
>         C:\Users\John\AppData\Local\Temp\Rtmp4CO5m7\downloaded_packages
> > library(xlsx)
> Loading required package: rJava
> Error : .onLoad failed in loadNamespace() for 'rJava', details:
>   call: inDL(x, as.logical(local), as.logical(now), ...)
>   error: unable to load shared object
> 'C:/Users/John/Documents/R/win-library/3.1/rJava/libs/x64/rJava.dll':
>   LoadLibrary failure:  The specified module could not be found.
>
>
> Error: package ‘rJava’ could not be loaded
> > install.packages("rJava")
> Installing package into ‘C:/Users/John/Documents/R/win-library/3.1’
> (as ‘lib’ is unspecified)
> trying URL
> 'http://cran.rstudio.com/bin/windows/contrib/3.1/rJava_0.9-6.zip'
> Content type 'application/zip' length 759396 bytes (741 KB)
> opened URL
> downloaded 741 KB
>
>
> package ‘rJava’ successfully unpacked and MD5 sums checked
>
>
> The downloaded binary packages are in
>         C:\Users\John\AppData\Local\Temp\Rtmp4CO5m7\downloaded_packages
> > library(rJava)
> Error : .onLoad failed in loadNamespace() for 'rJava', details:
>   call: inDL(x, as.logical(local), as.logical(now), ...)
>   error: unable to load shared object
> 'C:/Users/John/Documents/R/win-library/3.1/rJava/libs/x64/rJava.dll':
>   LoadLibrary failure:  The specified module could not be found.
>
>
> Error: package or namespace load failed for ‘rJava’
> > library(xlsx)
> Loading required package: rJava
> Error : .onLoad failed in loadNamespace() for 'rJava', details:
>   call: inDL(x, as.logical(local), as.logical(now), ...)
>   error: unable to load shared object
> 'C:/Users/John/Documents/R/win-library/3.1/rJava/libs/x64/rJava.dll':
>   LoadLibrary failure:  The specified module could not be found.
>
>
> Error: package ‘rJava’ could not be loaded
>
>
> John David Sorkin M.D., Ph.D.
> Professor of Medicine
> Chief, Biostatistics and Informatics
> University of Maryland School of Medicine Division of Gerontology and
> Geriatric Medicine
> Baltimore VA Medical Center
> 10 North Greene Street
> GRECC (BT/18/GR)
> Baltimore, MD 21201-1524
> (Phone) 410-605-7119
> (Fax) 410-605-7913 (Please call phone number above prior to faxing)
>
>
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